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Worksheetsscience quiz
Total questions: 25
Worksheet time: 19mins
which of these is not a cereal?
maize
gram
wheat
rice
Which of these is not a kharif crop?
wheat
rice
maize
groundnut
Which of these nutrients is compost rich in?
organic nutrients
nitrogen
phosphorus
potassium
Which of these is not a fungal disease of plants?
wilt
rust
smut
blight
Compost lacks which of the following nutrients?
nitrogen
phosphorous
potassium
all of these
Which one of the following does not add nutrients to the soil?
crop rotation
field fallow
manures
ploughing
Which of the following machines can be used to harvest a crop and also to beat out the grain from the chaff?
harvester
combine
harrow
thresher
Conversion of proteins into ammonia is called (a)
Some bacteria can convert nitrate salts in the soil to free nitrogen. True or false?
true
false
Name three natural methods of adding nutrients to soil
(a)
List the steps involved in the nitrogen cycle.
(a)
All microbes are harmful
true
false
Which of the following cannot be classified as either living or non-living?
fungi
bacteria
viruses
protozoa
Amoeba is a
bacterium
virus
fungus
protozoa
all of these
Microorganisms spread through
air
cuts
water
all of these
Microbes are disease-causing microorganisms. True or false?
true
false
what is anthrax
(a)
define citrus canker
a bacterial disease that affects trees of citrus fruits and is spread by air
affects vegetables spread by insects
a viral disease that affects trees of citrus fruits and is spread by air
a fungal disease that affects trees of citrus fruits and is spread by air
consuming such food which produce toxic substances and cause serious illness is called
(a)
the souring of milk is due to the action of
(a)
in the process of braeking down of sugar, alcohol is formed and co2 is given off. this process is known as
(a)
fungi contain chlorophyll
true
false
what are the five major groups of microorganisms?
(a)
microorganisms forms a hard outer covering called
(a)
give 3 examples of protozoa
(a)
